I'm looking for a good website where I can find TV listings to see the schedule of what's on tonight. It should be customizable so I can select which stations I want to see (If there are 30 channels available to my local area and I watch only 5 of them, then I want to see listings for only 5 channels). And I want a logon id system where when I log on, my customized listings (of my 5 channels) are displayed on the first screen. Oh, and it should include over-the-air stations and not just cable/satellite.

Any suggestions? I have tried tvguide and nytimes, both are too clunky and you gotta go through 2 or 3 screens EVERY TIME to get to the customized listings.

Try CAT - Calendar for TV
I use it as a quick reminder of what's coming up.
It's apparently a British site but he seems to track most of the major US shows.

http://tvlistings.zap2it.com/tvlistings/ZCGrid.do

http://my.myway.com/

Create an account then add the "My TV Listings" module.

Has all the options you mentioned and it's a pretty clean interface compared to other sites.

Since it takes a bit of setup, here's a preview of the normal homepage view and the "Full Grid" view.

titantv.com